Open AccessEfficient supercontinuum generations in silica suspended core fibers
Author(s) -
Libin Fu,
Brian K. Thomas,
Liang Dong
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.019629
Subject(s) - supercontinuum , optics , materials science , wavelength , zero dispersion wavelength , photonic crystal fiber , cross phase modulation , dispersion (optics) , raman scattering , core (optical fiber) , self phase modulation , phase (matter) , fiber laser , nonlinear optics , optical fiber , laser , optoelectronics , phase modulation , dispersion shifted fiber , raman spectroscopy , physics , phase noise , fiber optic sensor , quantum mechanics
We have experimentally studied supercontinuum generations in highly nonlinear suspended core silica fibers as alternatives to photonic crystal fibers. Octave-spanning spectrum can be easily generated at peak pump power levels as low as approximately 1.5 kW at 1 microm and approximately 1 kW at 800 nm, which effectively enables f ceo stabilization of mode-locked fiber lasers without further amplification. Experiments also confirm that the blue edge of the supercontinuum undergoes a two-phase growth process, an initial fast growth governed by phase-matched dispersive wave generation and a second slower growth governed by group-velocity-matched cross-phase modulation. We have further experimentally shown that the fundamental solitons generated from the initial fission process can be independent of pump powers and the orders which they are generated. Furthermore, while the fundamental soliton wavelength undergoes continuous red shift by Raman scattering, they continuously lose power to longer wavelength dispersive waves where phase-matching to this long wavelength dispersive wave is allowed and, otherwise, maintain its initial power where phase-matching to long wavelength dispersive wave is not allowed. We also demonstrated that total suppression of dispersive wave generation at short wavelength can be achieved in the absence of dispersion slope at the pump wavelength.